Upscaling textures on SNES emulators to improve graphics on today's displays: https://arstechnica.com/gaming/2019/04/hd-emulation-mod-makes-mode-7-snes-games-look-like-new/
Really neat approach. I've seen emulators do clever 2D smoothing, but this feels closer to 'original intent'.
miniblog.
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Incredibly impressive: reverse-engineering and modifying SNES games so they run on the faster CPU in the cartridge, not the console CPU: https://www.retrorgb.com/vitor-vilelas-race-drivin-sa-1-hack-released.html
Amazing project building a NES cartridge with a Raspberry Pi inside emulating a colour SNES! The explanatory video is impressive and thoughtful too.

